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Difficulty to run java file II [message #646418]

Thu, 23 December 2010 21:46

Paulo Kutwak

Messages: 32
Registered: November 2009
Location: Brazil

Member

Hi, Eric. I tried what you said, no worked. I had many others problems when I installed EclipseRT.

Thanks for help.

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Re: Difficulty to run java file II [message #646469 is a reply to message #646418]

Fri, 24 December 2010 15:27

Paulo Kutwak

Messages: 32
Registered: November 2009
Location: Brazil

Member

I don't understand, I must create a new project to make work and create a new class, open a file and copy and paste. No advance open the file alone without create a project, so no appear the option Java Application to run the class. I have many java files and I can't get import and no advance open the file like I told.

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Re: Difficulty to run java file II [message #646473 is a reply to message #646469]

Fri, 24 December 2010 16:43

Russell Bateman

Messages: 3798
Registered: July 2009
Location: Provo, Utah, USA

Senior Member

On 2010.12.24 8:27, Paulo wrote:
> I don't understand, I must create a new project to make work and create
> a new class, open a file and copy and paste. No advance open the file
> alone without create a project, so no appear the option Java Application
> to run the class. I have many java files and I can't get import and no
> advance open the file like I told.

I believe that you can open and edit a .java file without it being part
of a project using File -> Open File...

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Re: Difficulty to run java file II [message #646515 is a reply to message #646418]

Sat, 25 December 2010 23:55

Nigel Jones

Messages: 1
Registered: December 2010

Junior Member

Yes, you can open and edit file any way. Which editor do you use by the way? Just interested in case this will lead me to better one.

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Re: Difficulty to run java file II [message #646526 is a reply to message #646469]

Tue, 28 December 2010 14:14

Eric Rizzo

Messages: 3070
Registered: July 2009

Senior Member

On 12/24/10 10:27 AM, Paulo wrote:
> I don't understand, I must create a new project to make work and create
> a new class, open a file and copy and paste. No advance open the file
> alone without create a project, so no appear the option Java Application
> to run the class. I have many java files and I can't get import and no
> advance open the file like I told.

Eclipse is based on Projects. You can open individual files that are not
part of a Project, but Eclipse can't compile or run them (how could it?
what would it use as the classpath for such files?).
So to work with Java code, it MUST be in a project. Did you know that
you can create an Eclipse Project who's contents are somewhere else on
your file system? There are several ways to get existing code into an
Eclipse Project, even copy the code for a Java class and then paste it
right into a package in an Eclipse Project.
Open the Eclipse Help Contents, then navigate to "Java development user
guide" > Getting Started > "Project configuration tutorial."

Eric

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